H He Li Be B C N O F Ni Na Mg Al Se 这是什么??
来源:百度知道 编辑:UC知道 时间:2024/05/30 19:20:56
无
Se改Si
Se改Si
元素符号。
分别是:氢 氦 锂 铍 硼 碳 氮 氧 氟 镍 钠 镁 铝 硒
化学元素的方程式
氢 氦 锂 铍 硼 碳 氮 氧 氟 氖 钠 镁 铝
化学里的元素周期表里的元素 氢 氦 锂 铍 硼 碳 氮 氧 氟 氖 钠 镁 铝
在初中或高中化学课本上可找到
怎么分类到英语里来啦!
选择题:Everyone is here except Li Lei,__?A.isn't he B.aren't they C.is he D.are they
选择题:He ____ a docyor when he grows up. (A.is B.will C.is going to be )
He thinks the Chinese people____good to him.A.are B .is C.be
He was seen____into the bedroom.A.steal B.to be stealing C.had stolen D.stealing.
英语选择题:He continues_____ day after day.(A.to work B.be work C.work)
2.Don’t __ Tom . He is only a boy.A.be hard on B.be keen on C.be kind to D.be on good terms with
.He can't be at school,____ ? A.is he B.isn't he C.can he D.can't he请帮忙解释为什么选A。
Mr. Li ____ be in Shanghai now because he'll attend a meeting this morning.
Li says he believes that the sooner reunification comes, the ___ it will be for Taiwan.
这道选什么:He expected there____more room for him to put in adesk.(A)will be(B)is(C)to be(D)being